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Mercury 305 CID - Adjustments; Accelerator Pump

Mercury 305 CID
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90-823225--1 1096 WEBER 4 BARREL CARBURETOR - 5D-9
Adjustments
NOTICE
Refer to “Precautions,” in this section,
BEFORE proceeding.
Accelerator Pump
IMPORTANT: Refer to “Important Service Infor-
mation” in this section, regarding the three ac-
celerator pump linkage holes and placement of
linkage rod.
1. Back out idle speed screw until it no longer con-
tacts throttle lever.
70474
a
b
a - Idle Speed Screw
b - Throttle Lever Contact Point
70473
b
a
a - Idle Speed Screw
b - Throttle Lever
2. Close throttle valves completely.
3. Accelerator pump is set at 7/16 in. (11 mm), which
is measured from the carburetor top to the bottom
of the S-link as shown.
70472
4. Adjustment of accelerator pump is done by bend-
ing the linkage as necessary to achieve the prop-
er dimension as stated above.
70473
a
a - Bend Here

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